#ifndef __ADC_H__
#define __ADC_H__

#include <avr/pgmspace.h>

extern void adc_initial(void);
extern void adc_fft (unsigned char channel);

// redefine sbi and cbi 
#define cbi(reg, bit_number) reg &= ~(1<<(bit_number))
#define sbi(reg, bit_number) reg |= (1<<(bit_number))

#endif //#ifndef __ADC_H__